Killua from Hunter x Hunter
Shion from No. 6
Prussia from Hetalia
Lag from Tegami Bachi
Kiryuu Twins from Vampire Knight
Victorique at the end of Gosick (if that counts XD)
Undertaker from Kuroshitsuji
Shiro from Deadman Wonderland
Aru Akise from Mirai Nikki
Near from Death Note
... Rook from Phi Brain? XD